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Annealing effect on the photoluminescence properties of Ce3+ doped YPO4 nanophosphors
(Optical Materials, 2019)
This work explores the influence of annealing temperature on microstructural and optical characteristics of Ce 3+ - doped YPO 4 nanopowders prepared by sol gel method. Samples were annealed at various temperatures (T = ...
Detection of Cu2+ ions in aqueous solution via emission quenching of colloidal EuPO4 ultrasmall nanoparticles
(Optical Materials, 2019)
EuPO4 and Eu3+-activated REPO4 (RE = La, Dy, Er) ultrasmall fluorescent nanoparticles (NPs) with an average diameter of 2.1 nm were prepared via colloidal synthesis and tested for sensing Cu2+ and other heavy-metal ions. ...
The enhancement of emission intensity and enlargement of color gamut by a simple local structure substitution with highly thermal stability preserved
(Optical Materials, 2019)
The local crystal structure engineering becomes an important strategy to design new phosphors with enhanced optical and thermal performance of white light-emitting diodes. Herein, a series of Na3Sc2(PO4)3: Eu2+ and ...
Colloidal crystals based portable chromatic sensor for butanol isomers and water mixtures detection
(Optical Materials, 2019)
In this work, we report on a structurally-colored composite colloidal crystal able to change its color in presence of different polar solvents such as butanol and to distinguish its isomers. Herein, polydimethylsiloxane ...
Judd-Ofelt and chromaticity analysis of hafnia doped with trivalent europium as a potential white LED phosphor
(Optical Materials, 2019)
Judd-Ofelt analysis of HfO2:Eu3+ with various europium doping concentrations, formed by plasma electrolytic oxidation, had been investigated. Ω2 parameter is increasing, while Ω4 parameter shows no concentration dependence. ...
Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite
(Optical Materials, 2019)
Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of ...
Silicon nanostructuring by Ag ions implantation through nanosphere lithography mask
(Optical Materials, 2019)
Nanosphere lithography is an effective technique for high throughput fabrication of well-ordered patterns on large areas. This study reports on nanostructuring of silicon samples by means of Ag ions implantation through ...
Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications
(Optical Materials, 2019)
Processing and characterization of polymer nanocomposites based on poly (methyl methacrylate) (PMMA) matrix with embedded core-shell CdSe/ZnS quantum dots (QD's) were presented in this work. The aim is to preserve the ...
Visible-light-responsive surface-modified TiO2 powder with 4-chlorophenol: A combined experimental and DFT study
(Optical Materials, 2019)
The visible-light-responsive inorganic-organic hybrid was prepared by surface modification of commercial TiO2 powder (Degussa P25) with 4-chlorophenol (4-CP). The optical absorption of the hybrid material is red-shifted ...